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A large family-held department store had the business objective of improving its response to complaints. The va between when the complaint was made and when it was resolved. Data were collected from 40 complaints that w (a) through (d) below. A Click the icon to view the data table. .....

A large family-held department store had the business objective of improving its response to complaints. The va between when the complaint was made and when it was resolved. Data were collected from 40 complaints that w (a) through (d) below. A Click the icon to view the data table. .....

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A large family-held department store had the business objective of improving its response to complaints. The va between when the complaint was made and when it was resolved. Data were collected from 40 complaints that w (a) through (d) below. E Click the icon to view the data table. ..... a. Construct a 95% confidence interval estimate for the population mean number of days between the receipt of a The 95% confidence interval estimate is from 28.4 days to 53.1 days. (Round to one decimal place as needed.) b. What assumption must you make about the population distribution in order to construct the confidence interval O A. The number of days to resolve complaints follows the t distribution. O B. The number of complaints per day follows the t distribution. O C. The number of complainte per day is normally distributed. O D. The number of days to resolve complaints is normally distributed. Complaint Data Days Between Complaint and Resolution of Complaint 45 32 28 64 7 24 162 34 24 33 18 20 2 27 45 152 16 42 115 69 16 26 19 26 17 111 7 8 12 64 93 26 10 49 81 26 29 14 37 Print Done * --
Transcribed Image Text:A large family-held department store had the business objective of improving its response to complaints. The va between when the complaint was made and when it was resolved. Data were collected from 40 complaints that w (a) through (d) below. E Click the icon to view the data table. ..... a. Construct a 95% confidence interval estimate for the population mean number of days between the receipt of a The 95% confidence interval estimate is from 28.4 days to 53.1 days. (Round to one decimal place as needed.) b. What assumption must you make about the population distribution in order to construct the confidence interval O A. The number of days to resolve complaints follows the t distribution. O B. The number of complaints per day follows the t distribution. O C. The number of complainte per day is normally distributed. O D. The number of days to resolve complaints is normally distributed. Complaint Data Days Between Complaint and Resolution of Complaint 45 32 28 64 7 24 162 34 24 33 18 20 2 27 45 152 16 42 115 69 16 26 19 26 17 111 7 8 12 64 93 26 10 49 81 26 29 14 37 Print Done * --
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